Intensity-Modulated Strain Sensor Based on Fiber In-Line Mach-Zehnder Interferometer

被引：29

作者：

Zhou, Jiangtao ^{[1
]}

Wang, Yiping ^{[1
]}

Liao, Changrui ^{[1
]}

Yin, Guolu ^{[1
]}

Xu, Xi ^{[2
]}

Yang, Kaiming ^{[1
]}

Zhong, Xiaoyong ^{[1
]}

Wang, Qiao ^{[1
]}

Li, Zhengyong ^{[1
]}

机构：

[1] Shenzhen Univ, Minist Educ & Guangdong Prov, Key Lab Optoelect Devices & Syst, Shenzhen 518060, Peoples R China

[2] Shenzhen Univ, Coll Civil Engn, Shenzhen 518060, Peoples R China

来源：

IEEE PHOTONICS TECHNOLOGY LETTERS | 2014年 / 26卷 / 05期

基金：

美国国家科学基金会;

关键词：

Elasto-optical effect; intensity-modulation; misalignment splicing; physical deformation; strain sensor; thin core fiber; REFRACTIVE-INDEX; TEMPERATURE;

D O I：

10.1109/LPT.2013.2295826

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

We demonstrated a novel intensity-modulated strain sensor based on a fiber in-line Mach-Zehnder interferometer with a large fringe visibility of up to 17 dB, which was fabricated by splicing a section of thin core fiber between two sections of single mode fibers with one misalignment-spliced joint. Such a strain sensor exhibited an ultrahigh sensitivity of -0.023 dBm/mu epsilon within a measurement range of 500 mu epsilon, which is about one order of magnitude higher than that reported in references. Displacement and stress distributions at the misalignment spliced joint were simulated by use of finite element method. In addition, the proposed strain sensor has an advantage of compact size of similar to 10 mm.

引用

页码：508 / 511

页数：4

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